This gives no perceptible difference. F0ck :? Having only booted into lightdm three times total (I think), I can't make a good judgement on this. It may, it may not. Of the times that it has worked: 1. I had just installed lightdm and used : sudo dpkg-reconfigure gdm3 to set the display manager [.....

This gives the same result as with /etc/X11/xorg.conf.d/20-fhdmod.conf and the monitor.conf files. I can see lightdm on occasion, but You could try to modify the code as follows : [..] Section "Device" [..] #Option "ZaphodHeads" "DP-3" [..] Section "Screen" #Monitor "Internal-1920" [..] I have to s...

I went and tried, removing this file from that directory makes it so that when you log in, you get the extended display setup, and the screen that shows is the secondary. It definitely is being used. Here is a new file, for a new test but please remove temporary all monitors.xml files as those Xorg...

Alright, I got it. Great, but did/would you try it without /etc/X11/xorg.conf.d/20-fhdmod.conf ? Because as you are using monitors.xml I think is in fact now useless... To allow lightdm to be seen at login, I copied this to its monitor.conf: cp ~/.config/monitors.xml /var/lib/lightdm/.config/monito...

Once I actually got into the gnome desktop with *both* screens working, this is the result: $ xrandr -q [...] DP-3 connected primary 1920x1080+0+0 (normal left inverted right x axis y axis) 294mm x 165mm 1920x1080 59.93*+ 48.01 Well, what if you put the following in /etc/X11/xorg.conf.d/20-fhdmod.c...

That's correct, I'm experimenting with Gnome's login manager currently. [EDIT]: I found a finicky way to get to the Gnome desktop using a vga monitor and fn+F7, now to try to edit the display settings. Fine, this confirms that "video" kernel parameter is irrelevant in your situation but on the othe...

I just installed the board in my i5 X220 and everything works wonderfully on a hardware level. Does that means you can see the BIOS ? And also can you see/interact with GRUB ? My issue is that when booting into Debian, I cannot see the login screen, nor X at all even if I blind log in. LightDM run ...

OMG what a great work ! Thank you so much Nitrocaster, you are my hero !!
I've been waiting so long this kind of mod to switch over from a good old X201 to an X220 (mostly for the SATAIII + ExpressCard PCI Gen2 specifications)